Deep-tilling attachment.



E. ROBINSON.

DEEP TILLING ATTACHMENT.

APPLICATION FILED MAR. 25, 1914.

1,100,620, Patented June 16, 1914.

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ELLSWOR'II-I ROBINSON, OF SELBY, SOUTH DAKOTA.

DEEP-TILLING ATTAGHMENT..

Specification of Letters Patent.

Patented June 16, 1914.

Application filed March 25, 1914. Serial No. 827,131.

To all whom it may emcem:

Be it known that I, ELLSWORTH ROBINSON, a citizen of the United States,and a resident of Selby, in the county of Walworth and State of SouthDakota, have invented a new and Improved Deep-Tilling Attachment, ofwhich the following is a full, clear, and exact description.

My invention relates to deep tilling attachments for plows.

The object thereof is to provide a simple, strong and inexpensivestructure which can be easily and quickly attached or detached from aplow, and which attachment takes the place of the front furrow wheeland, similarly, forms a support for the frame of the plow, also a guidefor the plow. I am aware that there are a number of attachments to beused in connection with plows for similar purposes, but all of them areprovided with an independent frame, detachably secured to the plow andhave adjustable Ineans independent of the means existing on the plow.

The invention consists of the construction and combination of parts tobe more fully described hereinafter and fully set forth in the claims.

Reference is to be had to the accompanying drawings forming a part ofthe specification, in which like characters indicate corresponding partsin both views and in which- Figure 1 is a perspective view of a sulkyplow provided with an embodiment of my invention; and Fig. 2 is a faceelevation of the deep tilling attachment, partly in sec tion, showingthe details of construction.

Referring to the drawings, the adjustable post 3 of the plow, whichcarries the front furrow wheel, has at its lower end a socket 4:provided with set screws 5 whereby the axle of the front furrow wheel isnormally clamped in the socket 1. My deep tilling attachment is adaptedto be secured to said socket 4:, and consists of a crank 6 clamped inthe socket 4:, the projecting end 7 of which is slightly deflected fromthe plane of the crank, so that the disks 8 rotatably mounted on saidend 7 of the crank are at a p per angle to till the soil while the plowis moved, and also to properly guide the plow by the engagement of thedisks with the furrow. The disks 8, which are two in number, are rigidlyconnected by a sleeve 9, which sleeve forms a large bearing for saiddisk on the end 7 of the crank. Said sleeve 9 forming the bearing is ofthe dust-proof type, and its displacement from the end 7 of the crank isprevented by a member 10 carried by the end 7.

It will be remarked that my deep tilling device carried by the socket 4;provided on the adjustable post 3, permits the adjustment of the plow,and, therefore, the depth of the furrow formed thereby. Furthermore, therear disk 8 constitutes a guide for the plow, so that my device, inaddition to causing deep tilling, incorporates all the advantages of anordinary front furrow wheel. By means of the set screws 5, the disks 8can be clamped at variable distances from the socket. Furthermore, theposition of the end 7 relative to the socket can be varied by turningthe end of the crank engaged in the socket 4 before the same is clamped.It is self-evident from the drawings that the substitution of my devicefor the front furrow wheel can be easily and quickly made, as all thatis necessary is to release the grip of the screws 5 on the crank 6, pullthe same out of the socket and insert the axle which carries the frontfurrow wheel, and by tightening the set screws 5 the device is properlyclamped in position.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. The combination with a plow having an adjustable post for a frontfurrow wheel of a deep tilling device removably associated with saidpost.

2. In a plow, anadjustable post for a front furrow wheel; a crankcarried by said post; and disks rotatably mounted on said crank.

3. In a sulky plow, an adjustable post for the front furrow wheel, saidpost having a socket at the lower end thereof; a crank in said socket,said socket having means for adjustably securing said crank; and a pairof disks rotatably mounted on said crank.

4. In combination with a sulky plow, a deep tilling device adapted totake the place of the front furrow Wheel, said deep tilling devicecomprising a crank and a pair of disks mounted to rotate on said crank.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ELLSXVORTH ROBINSON. Witnesses FRED GRIFFIN,

CHAS. D. DURFEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

